Antislipping calk for shoes



Emy M2, w33. J. J. MASTERSON Lgmg n ANTISLIPPING CALK FOR SHOES Filed Dec. l, 1932 Patented July 18, 1933 i UNITED STATES PATENT GFFICE JOHN J. MASTERSGN, OF BROCKTON, MASSACHUSETTS ANTISLIPPING CALK FR SHOES Application filed December 1, 1932. Serial No. 645,221.

This invention relates to a slice Whose Figure 3 is an end view looking toward outer sole is provided with spikes projecting the outer end of the member. outward from its tread face and adapted to Figure 4 is a section on line 1-4 of Figindent the ground, and prevent slipping. ure 2.

5 shoes thus spiked are used by golfers, tennis Figure 5 is a section on line 5-5 of Fig- 55 players, runners, and others. ure 2.

A spike formed as a tapering cylinder hav- Figure 6 shows the member in section ating a length considerably greater than its tached to an outer sole. largest diameter is desirable, the spike hav- Figure 7 is a perspective vievv of the meming integral attaching means constituting a bei' Shown by Figures 1, 2, 3, i and 5. 30

rivet portion of the spike and adapted to The above mentioned figures are considerbe inserted in an outer sole and clinched Withably enlarged. in the tread surface thereof. Figure 8 is a side view of a portion of a Spikes having tubular rivet portions are shoe provided with a plurality of the above l5 now in use, the rivet portion being aliiied mentioned members a driver being shown in 65 with the spike, inserted in a hole formed for Section applied to one of said members. its reception in the sole, and secured thereto Figures 9 and 10 show a driver formed by longitudinally7 splitting the rivet portion as a permanent magnet. into tongues which aie clinched on the inner Th@ Silmereferenoe characters indicate the surface of the sole by an operation Which Same plltS 111 all of the figures.

must be performed before the sole is at- Ill Callylng' Out my invention I provide tache@ and becomes a pal-t of a Sho@ means adapted to convert the smooth tread A sole thus spiked is objectionable beof the Outer Sole. 15 of a Completed Shoe mt@ cause the spikes projecting from the tread a gsrqlnd engagmg tread 75 face are liable to deface other portions of the C 1 al Heafls Conlprllses atpltlmlty of ldltl slice during the process of manufacturing, I mem els @am mame @um as Dex e` scribed. so that it is necessary to prevent this liability The member Shown Separately by Figures by means involving a consideiaole enpendil to 7 lncludes a Splke 127 an enlargement ture of time in completing the shoe, and an having im Outer impact facev 13 surrounding 80 increase of the cost of manufacture. and overhangng the base of the Spike, and My object iS to enable Spikes to be 21tan inner seating face 14 formed to bear on tached to the outer sole of an otherwise cnthe tread of the outer sole 15 of a completed tireliT completed shoe. ln other Words, my shoe. object is to provide shoe converting means The member comprises also a plurality of 85 adapted to convert the smooth tread of a coni- Slled .apart prongs 16 surrounded by and pleted shoe into al spiked ground-engaging Pl'OlGCtlng from the Seating face 14- TWO treni prongs are shown by the drawing.

This object is attained as hereinafter de- The s pke 12 and Impact fae are formed- '9U scribed and clamed to permit the application to said face of the Of h U 1 (y (r 4 annular impact end 17 (Figure 6) ofa tubut e accompanying ciaiving oiininzj a l d, 7 18 d t th t ...a of ai. Spammen,- gg fije. 3m. 0 be igualme- Fioure 1 is a side view of a member Which u n@ Smc Hmm? en y e Sp1 {e as n best shown by Figuie 6. is one of a plurality of identical members 95 The prongs 16 have opposed inner sidesV adapted t0 Convert the SmOOth tread 0f il Which in this instance include parallel incompleted Sho@ mt@ a spiked gloundengag nei' portions 19, and oppositely inclined outing tread. er portions 2O intersecting the outer sides Figure 2 is an end View of said member of the prongs to form cutting ends adaptedV looking toward its inner end. to penetrate the tread of the outer sole 15. 100

LEO

Said inclined portions are adapted to cause outward bending of the prongs, as shown by Figures 6 and 8, while they are being driven.

The impact face 13 is formed to distribute force exerted thereon by the driver 18 so that substantially equal bending of the prongs isensurcd. rlhe inner sides of the prongs 16 extend inward to the seating face 14, so that the length of the prongs is reduced to a minimum, enabling the bent prongs to be entirely contained between the tread and inner faces of a. sole 15 of average thickness, Yithout protruding from the inner face.

The impact tace 13 is preferably trusteconical, and intersects the seating face 14; to provide the enlargement with an acute angled margin adapted to conform closely to the tread of the outer sole, and form a tight joint therewith, preventing the entrance of moisture between the seating tace and the sole tread.

The acuteness of said margin is preferably increased by imparting a dished form tov the seating ace 14, as shown by Figures et, 5 and 6. The outer sides of the prongs 16 are parti-cylindrical. The inner portions 19 of the inner sides are perpendicular to the seating face 14, and the inclined portions 20 are grooved or longitudinally concaved, and intersect the outer sides to form arcuate chisel edges 25 on the outer ends of the prongs.- v

It will now be seen that any completed shoe having a sole leather outer sole and a smooth tread may be quickly converted into a shoe having a spiked tread, either at a shoe factory, or at a retail store, by applying the shoe to a suitable support such as a jack 26, (Figure 8), and attaching a suitable number of the described members to the outer sole by a driver such as that shown by Figures 6 and 8. The driver may be held by the operator and actuated by a hammer, or it may be otherwise operated to secure the described result.

The described members constitute articles of manufacture which may be marketed as such.

It is obvious that the converting member may be attached to any outersole having sufficient density, whether of sole leather or other material, and that it may be attached as well to the top lift of a heel of suitably dense material.

The driver may bc a modified horse shoe magnet shown in side elevation by Figure 9, and in longitudinal section by Figure 10. The poles 27 of the magnet are slightly spaced apart and their ends and inner sides are formed as shown at 28 to bear on the impact tace 13 and spike 12. One of the described converting members may be held by the magnet with the spurs 16 projecting from the poles in position to be forced into the outer sole.

A shoe having spikes projecting outwardly from its tread face, is known as a sporting shoe. A shoe not provided with spikes, may be called a non-sporting shoe.

It will be seen that my invention enables a shoe retailer to quickly and conveniently convert non-sporting shoes of various types into sporting shoes, and thus supply the wants of customers, without being obliged to carry both sporting and non-sporting shoes in stock.

l claim:

A member adapted to convert the smooth tread of a completed shoe into a ground-engaging tread, said member including a spike, an enlargement surrounding the base of the spike, and having an outer impact face and a seating face, and a plurality of spaced apart prongs projecting inwardly from the seating face, and having inner sides including inclined outer' portions intersecting the outer sides of the prongs to form cutting ends adapted to penetrate the tread of an outer` sole, the outer sides of the prongs being particylindrical, the inner sides having inner portions perpendicular to the seating face and grooved oppositely inclined outer portions intersecting the parti-cylindrical outer sides to form arcuate chisel edges on the outer ends of the prongs.

JOHN J. MASTERSON. 

